Which of the following is not true? a. The earth's axis is tilted 23.5 degrees relative to the plane of the ecliptic.
b. The axis through earth's two poles points just slightly off polaris
c. During the winter months, the earth's axis is aligned towards southern cross
d. Throughout the year, the Earth's axis maintains the same alignment relative to the plane of the ecliptic
We have seasons because Earth's axis – the imaginary line that goes through the Earth and around which the Earth spins — is tilted. It's tilted about 23.5 degrees relative to our plane of orbit (the ecliptic) around the Sun.
Glaciers that once covered the Hudson Bay area melted 8,000 years ago. As a result of this, the bay is gradually rising. In another 10,000 years or so, it will have risen above sea level and become dry. This process can best be considered an example of
Climate change (Global warming)
One of the most important features of global warming is melting glaciers and a rise in sea level. An increase in the earth's temperature commonly called global warming has caused glaciers and ice caps to melt. Just as we have more water when we melt ice with heat. The same principle is applicable here just that it takes a long period of time. If the earth's temperature continue to increase then overtime all the glaciers will melt. It is also important to note that increased temperature also results in increased evaporation. In cases where the water evaporated is not being replaced adequately, then the place will eventually dry up. Deserts were believed to be once occupied with water but got dried up due to climate change.
Imagine you are analyzing a metamorphic rock and find that it contains beta quartz and andalusite. Under which of the following temperature and pressure conditions could this metamorphic rock have been formed?
2-9 kilobar and 450-700 degrees Celsius
Metamorphic rocks are commonly formed at temperatures greater than 200 degrees Celsius and pressures greater than 3kiloBar. This temperature and pressures can only be achieved deep beneath the earth surface where the temperature is high and and the pressure is great. It is natural for metamorphic rocks to contain quartz because it is an inherited mineral. But on the other hand, the grade of metamorphism also determines the kind of mineral that can be found in a metamorphic rock. There is high grade metamorphism(high temperature, high pressure). An example of such mineral is sillimanite. We also have medium grade and low grade metamorphism according to their respective temperature and pressure. Andalusite mineral falls under the medium grade metamorphism. A medium grade metamorphism occurs around 450-700 degrees of temperature and pressure of 2-9 kilobar.
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What is the Ituri?
a rain forest
_______ are steep-sided, symmetrical volcanic peaks built of alternating layers of pyroclastic debris capped by high-viscosity andesitic to rhyolitic lava flows that solidify to form protective caps.
A stratovolcano is a tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash.
These volcanoes are characterized by a steep profile and periodic, explosive eruptions.
The lava that flows from them is highly viscous, and cools and hardens before spreading very far.
The source magma of this rock is classified as acidic, or high in silica to intermediate (rhyolite, dacite, or andesite. or basalt).
This is in contrast to less viscous basic magma that forms shield volcanoes (such as Mauna Loa in Hawaii), which have a wide base and more gently sloping profile.
Many stratovolcanoes exceed a height of 2500 m.
How can gathering information help you solve a problem? Check all that apply. It can help you identify the cause of a problem.
It can help you persuade an audience to support a proposal.
It can help you consider options to solve a problem.
It can help you identify who is responsible for implementing a solution.
It can help you examine advantages and drawbacks to possible solutions.
It can help you identify the cause of a problem, It can help you consider options to solve a problem, and It can help you examine advantages and drawbacks to possible solutions is the way gathering information help you solve a problem. Hence, option A, C and E are correct.What is gathering information?
Gathering information is the process of collecting the data that is required, and it is also the process of acquiring the knowledge. It is not about the just gathering the information, but it is also about the getting knowledge from the information. Instead of the education that has eventually been gathered, what is important is the education that is being gathered. Information gathering does not always have to be intellectual.
Surveys, interviews, exams, physiological evaluations, observational studies, record reviews, and biological samples are a few examples of information gathering techniques.
Thus, option A, C and E are correct.
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What is the difference between relative location and absolute location
Relative location describes determining a place relative to other landmarks and also used to symbolize a location of a place within a larger circumstance while absolute location references a place on the surface of the earth based on particular geographic coordinates, like latitude and longitude. While you can give the geographic coordinates of a city or a building, it is difficult to provide the absolute location of an area because such places may not be pinpointed then you can present the absolute locations of the edges of that particular area.
An alluvial fan ________. a fan-shaped mass of sediment deposited at the base of a mountain front due to an abrupt change in stream gradient is another name for a small delta forming along a beach a plant that grows in deltas and is diagnostic of a delta a fan-shaped sediment mass generated by a distributary channel
An alluvial fan is a triangle-shaped mass of sediment deposited at the base of a mountain front due to an abrupt change in stream, but they are similar to delta in shape.
An alluvial fan is a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment called alluvium, such as silt. Alluvial fans are the result of running water through the mountains, hills, and canyons.
Deltas are similar to alluvial fans in shape, but the environment where they are deposited is different, as sediments that form deltas are transported in continuous flowing water and deposited at the mouths of streams and rivers as they finish their way into lakes or oceans.
What would have to be the mass of this asteroid, in terms of the earth's mass MM , for the day to become 23.0% longer than it presently is as a result of the collision? Assume that the asteroid is very small compared to the earth and that the earth is uniform throughout.
The mass of the asteroid of the Earth will be 0.0092M.How to calculate the mass?
From the information given, the length of the day is 2πrad/w. Then, the conversation of angular momentum will be:
m = 2/5M(w1 - w2)/w2
T2 = 1.23T.
1/w2 = 1.23/w1
(1 × w1) = (w2 × 1.23)
w1 = 1.23w2
(w1 - w2) / w2 = 0.23
m = 2/5(0.23) M
In conclusion, the mass is 0.092M.
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The mass of this asteroid, in terms of the earth's mass m = 0.092 M.
The length of the day T = 2π rad / ω.
where ω = Earth's angular rotation rate
Conservation of angular momentum applied to collision between the Earth and the asteroid gives:
The mass of this asteroid, in terms of the earth's mass m = 0.092 M.
The transfer of water between the atmosphere, the oceans, and the continents is known as the ________. A. closed cycle B. geologic cycle C. hydrobiological cycle D. meteorological cycle E. hydrologic cycle
E. hydrologic cycle
The transfer of water between the atmosphere, the oceans, and the continents is known as the hydrologic cycle which involves water moving from the surface most importantly from the oceans to the atmosphere, over the land and everywhere in between. In phases of water, the earth is a sealed system, so water is not joined or withdrawn from the earth, it is simply transformed, transported, and even recycled.
Since the hydrologic cycle has no start or end, you can dive in at any step. A great place to start is in the oceans, where most water of the earth is stored.
The geologic period during which most of the life forms which ultimately became the "fossil fuels" lived is the __________________. Question 2 options: Carboniferous Pleistocene Cambrian Cretaceous
The Cretaceous is the last period of the Mesozoic era, located between 145 and 65 million years ago.
In the Cretaceous, the Earth begins to take the shape we know today. Whitish rocks appear that characterized the strong incidence of limestone in this period.
In the middle of the Cretaceous, the formation of more than 50% of the world oil reserves that are known today began, of which the concentrations located around the Persian Gulf and in the region between the Gulf of Mexico and the coast of Venezuela.
What defines a mixture? A. can be broken down into its basic substances through physical means B. created through a chemical reaction C. cannot be broken down into simpler substances D. described by a chemical formula
Explanation- A mixture is a physical combination of two or more substances blended together without a chemical reaction. Accordingly, each substance found in a mixture keeps its own properties and can be broken down into its basic substances through physical means.
A. Can be broken down into basic substances through physical means.
What happens when more gases dissolve into magma? A. The magma becomes hotter
B. The magma becomes less vicious
C. The eruptions occur less frequently
D. The eruptions become more violent
Bodies of magma rise in the crust until they reach a point of neutral buoyancy. The expansion of gases brings the magma closer to the surface and drives eruptions. When more gases are dissolve into the magma, there would more chances of explosion
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What was formed from the collision of the indian landmass with the asian continent.
The Tibetan Plateau and the Himalayas
The Tibet Plateau is a geological formation located in East Asia, between the Himalayas and the Taklamakan Desert, where it covers the so-called Tibetan autonomous region and a few other Chinese provinces, being present in other countries such as Myanmar and India.
As it exceeds 5000 meters in altitude, it can be said that it is an uninhabitable area, having earned the nickname of the roof of the world, since it is the largest among all the plateaus in the world.
The Himalayas, is the highest mountain range on planet Earth, bordering the Indo-gangetic plain and the Tibetan plateau, being present in five countries, including Pakistan, India and China which includes Tibet, it is in the Himalayas Mount Everest.
Because the mountains were a great distance from the sea, Darwin hypothesized that ____________ geological changes in the Earth brought them there over time.
Because the mountains were a great distance from the sea, Darwin hypothesized that major gradual geological changes in the Earth brought them there over time.
Darwin's first discoveries were geological. He found sea shells on rocks 4,000 meters above sea level, which would help to prove the theory, which only emerged at that time, that the Earth had formed over millions of years. Today we accept this idea naturally, but at the beginning of the 19th century, it was a very radical thought.
What practices could help reduce erosion of water banks?
In order to avoid the appearance of erosion, it is important to take some preventive measures:
• Carry out planting accompanied by a contour line, this is one of the most successful containment practices. The level curve prevents rainwater from flowing down the slope with great speed, so it does not cause erosion.
• Combine crops with the planting of vegetables such as eucalyptus, bamboo and sugar cane, as these act as a protective barrier in relation to wind and rain erosion.
• Another alternative of prevention is to carry out the planting in level curves of the terrace type, in this technique the water is retained, preventing the formation of runoff, which is a potential erosive agent.
• Act effectively in the preservation and conservation of gallery forests, in addition to recovering degraded areas of riparian forests, the vegetation cover contributes to prevent the passage of runoff that causes erosion and also prevents the silting up of water sources.
• Rugged regions must be preserved and not occupied for the development of agriculture, as well as areas of fragile soils that are easily affected by erosion.
The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active ______
The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active mid-ocean ridges.
Beginning in the late 1940s, oceanic expeditions continued to map the Atlantic ocean floor using new equipment and collecting thousands of rock samples. These works made it possible to map a gigantic system of submarine mountain ranges, called meso-ocean ridges. By perfecting the method of dating rocks, scientists have been able to determine the true age of seabed rocks. They found that the closer to the mid-ocean ridge the rocks were much younger than imagined, while rocks close to the continents were increasingly older, thus corroborating the Continental Drift.
Apparent polar wander indicates that: a. the north magnetic pole wanders slowly around the entire Earth over million years timescales b. the continents have moved around the Earth's surface over million year time scales. c. The Earth's rotational axis has varied wildly during Earth's history. d. none of the above qizlet
Apparent polar wander is the interpretation of the Earth's old magnetic poles in comparison to the tectonic component, such as continents, being studied as present day, that is assumed to be in a fixed position. This technique was created in 1954 by Creer et al.
What is the smallest country by square mileage in north america?
Saint Kitts and Nevis
Mountain formation can result when _________ occurs?
When the collision of two continental plates occurs
Mountain formation can result when the collision of two continental plates occurs. When two tectonic plates collide their edges crumple together thus pushing huge slabs of rocks to the earth surface which are known mountains. Mountains can also be formed by the actions of volcanoes which results when during the collision of two tectonic plates one of the plates is disposed inward thus exposing the mantle which will result in the spill of molten magma which later cools down to form the mountain.
Erosive activities of water can also form mountains.